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naughton lab

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We have developed a highly sensitive chemical sensor using nanocoaxial electrodes with porous annuli and capacitive detection. In Zhao et al. “Ultrasensitive chemical detection using a nanocoax sensor”, we report sub-ppb (parts per billion) sensitivity to various volatile organic compounds in nitrogen. Read more here.

We are developing nanocoax-based biosensor using a number of sensing modalities. in one (above), target molecule-specific linkers are functionalized on an inner surface of a hollow annulus nanocoax. Upon exposure to the target molecule (e.g. in serum, blood, saliva, etc.), this linker immobilizes the target via highly specific binding, with detection via capacitance/ impedance spectroscopy. Read more here.

Cover of the October 2012 issue of Physica Status Solidi A, highlighting Fan Ye’s work on embedded metal nanopatterns for enhanced optical absorbance. Read more here.

Dynamic computer simulation of magnetoresistance oscillatory phenomena in quasi-one dimensional molecular organic conductors (e.g. based on TMTSF or DEMT molecules), versus direction of magnetic field. The animation shows the variation in the angular magnetoresistance oscillations (AMRO) as the magnetic field direction is changed. Read more here.

Dynamic computer simulation animation of magnetoresistance oscillatory phenomena in quasi-one dimensional molecular organic conductors (e.g. based on TMTSF or DEMT molecules), plotted out-of-plane against the components of the magnetic field along (horizontal axis) and perpendicular to (vertical axis) the quasi-1-D chain axis. The animation shows the variation in the angular magnetoresistance oscillations (AMRO) as the magnetic field strength is increased. Read more here.

Dynamic computer simulation animation of propagation of subwavelength electromagnetic wave (visible light) along the annulus of a nanoscale coaxial cable. The inner and outer metallic conductors are not shown, in order to reveal the annulus volume. Read more here.

An electron microscope image (SEM) of a nanocoax array, using false color to indicate the various constituents. Read more here.

Example of fine angle resolution employed to locate principal axes in q1D organic conductors in order to characterize the superconducting critical field anisotropy, from Pashupati Dhakal’s 2011 paper “Upper critical field of the molecular organic superconductor (DMET)2I3”.Read more here.